What is CVE-2026-13218?

CVE-2026-13218 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Kubevirt: kubevirt: symlink following in writetocachedfile allows host file overwrite from virt-launcher

Which CVE IDs does CVE-2026-13218 cover?

CVE-2026-13218 covers the following CVE IDs: CVE-2026-13218. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-13218?

CVE-2026-13218 has a CVSS v3 base score of 4.2, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-13218?

CVE-2026-13218 affects 4 products, including: azl3 kubevirt 1.7.1-7 on Azure Linux 3.0; azl3 kubevirt 1.7.1-8 on Azure Linux 3.0; azl3 kubevirt 1.8.4-1 on Azure Linux 3.0; azl3 kubevirt 1.8.4-2 on Azure Linux 3.0.

CVE-2026-13218MediumCVSS 4.2

Kubevirt: kubevirt: symlink following in writetocachedfile allows host file overwrite from virt-launcher

Vendor

Microsoft Security Response Center (MSRC)

Published

July 1, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-13218 →

🎯 Affected products4

azl3 kubevirt 1.7.1-7 on Azure Linux 3.0
azl3 kubevirt 1.7.1-8 on Azure Linux 3.0
azl3 kubevirt 1.8.4-1 on Azure Linux 3.0
azl3 kubevirt 1.8.4-2 on Azure Linux 3.0

✅ Remediation

Security Update KBRelease Notes (Security Update)

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-13218
patchhttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade